Posts exist on this topic but they are too old to reuse without necroing.
I am trying to find out the current state of play with the Lunar Cycles and the spawning of Werewolves / Vampires in the game. I have been reading everything I can find on this subject on the internet. It seems some articles are a couple of years old from the early days of the game or in other cases the author doesn't know everything for sure and there is a lot of speculation.
It is generally implied that Werewolves spawn at the full moon and Vampires spawn at new moons. Some sources debate over whether this is actually the case.
I got a Werewolf infection once when looking for a Vampire bite. It was not perfectly either the full or new moon.
A person in zone chat implied that one of the updates made a change so that any Bloodfiends or Werewolves could cause you to get infected if you are attacked by them at night (possibly in the right lunar phase).
I was not able to get infected fighting bloodfiends in Rivenspire under a new moon (or as close as I could get to one). Someone else implied it was possible to get infected from any Bloodfiend but the probability of infection is very low.
I read on the forums that the lunar cycles have an effect on the tides that can be observed by the level of the water on the steps of the dock in Riften. Yet others say there are no tides in the game (I hadn't noticed them but then I wasn't looking for them).
Some guides show spawn locations for Vampires and Werewolves in the last zone of each alliance, where they are supposed to spawn. Different guides can show spawns in locations other than these. This raises the question of whether there are any specific spawn location of if Werewolves / Bloodfiends can spawn randomly in a wide area over the zone.
I am really trying to find out how this mechanic works in the current latest version of the game and be able to sift of the truth from the myths and misinformation.
I know I can get a bite by asking for one but I am quite determined to try accomplish this through the in game mechanic for the satisfaction of having accomplished it. I have had two alts have Werewolf bites from wild Werewolves when I wasn't trying to get one (I paid to have them cured). For that reason I know first hand it can be done. Sad if it seems to only happen for me when I don't want it.
My Characters
Xargothius: Breton - JOAT / Magsorc | Orchid the Fair: Orismer - Crafter / Heavy Tank | Voneri Vox: Dunmer - Magplar Healer | Rexorgiana: Imperial - Temptress / Magblade
Phirkius: Altmer - MagSorc | Rexorigus: Imperial - Med Tank / StamKnight | Sven Svedishchef: Nord - Provisioner / Stamplar | Finds-All-Fungi: Argonian - Alchemist/ Stamblade
Emerald-Wild-Guard: Bosmer - Wyrd / StamSorc | Nates Datum Festi: Imperial - Light Tank / StamKnight | Magnolia Desert-Blossom: Redguard - 2 Handed Stamplar | Shadow-Softpaw: Khajiit - StamBlade
Sorcerer | Dragon Knight | Templar | Night Blade